Floating decimal point arithmetic control means for calculator



June 5, 1962 i H. M. SIERRA 3,037,701

FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR File'd Nov. 21, 1956 32 Sheets-Sheet 1 ACCUMULATOR UPPER F. D. CONTROLS PROGRAM REG.

ADDRESS REG.

CONTROL CIRCUITS STORAGE INVENTOR. HUBERTO M. SIERRA AGENT 3,037,701 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed NOV. 21, 1956 H. M. SIERRA June 5, 1962 32 Sheets-Sheet 2 mon 5 bmfi o0 om 20 z? mmfimwhwmg pmm vmwhwm Q N mobjaznu q H. M. SIERRA FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 32 Sheets-Sheet 3 NmTFmmwZ O PDnEIDO mwOO .rmmm OZ mQ wt mom hwm

OON m3 ALCULATOR H. M. SIERRA FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR C Filed NOV. 21, 1956 52 Sheets-Sheet 4 JOMkZOU Q CL m 0... m. W UHH I N mUHM I.

H. M. SIERRA 3,037,701

METIC CONTROL MEANS FOR CALCULATOR June 5, 1962 FLOATING DECIMAL POINT ARITH Filed Nov 21, 1956 32 Sheets-Sheet 6 OI OQ -PDO mmoo on HH June 5, 1962 H. M. SIERRA 3,037,701

FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 32 Sheets-Sheet 7 Qm QHm. n

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FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 32 Sheets-Sheet 8 mwm wmIUh J M22. 20 OOwOm JOE m DEE TDNQOE 9& mmm WA 58 Win53 kmwwz O ZmUmm FQQ xUoJm OF H. M. SIERRA 3,037,701 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR June 5, 1962 Filed Nov. 21

52 Sheets-Sheet 9 June 5, 1962- H. M. SIEIRRA 3,037,701

FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 32 Sheets-Sheet 1O ACC. D|ST. LATCH A D-ON-234 I CF ACC.=D|ST. LATCH DXL SHIFT 8 PLACES H. M. SIERRA June 5, 1962 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR 52 Sheets-Sheet 12 Filed Nov. 21, 1956 H. M. SIERRA June 5, 196 2 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR 32 Sheets-Sheet 13 Filed Nov. 21, 1956 H. M. SIERRA June 5 1962 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR 32 Sheets-Sheet 14 Filed Nov. 21, 1956 H. M. SIERRA 3,037,7Q1 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR June 5, 1962 Filed NOV. 21, 1956 32 Sheets-Sheet 15 M muHr n mkzuzomxw 522 I Kw we; 8v wmq zo rub} mam w 82; b9 6;. :35 m wmwmw w pi 55 55 02 E5 2 8 5% my mxm Efi n 60 0 Q3 a? mo 2v :8 R6 o 92 :21. E33 0 mm m 0 02g 300 mg 0 9 m3 E .6 56 mwnE: Emmi o A m? rub) 22 mm. v 03 23 M5503 20 2m om :3 mvv vim 8 I: 2v Ev l N v c {.6 o. 9% rut Jr 2v kw: o 9% :9 0 m3 H mkzwzonxw u G 20 213 a a Wigw m a m mflk 306 0c K1 om m3 I N? :w 4 23 m m 4 9% m3.

H. M. SIERRA June 5, 1962 FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR 32 Sheets-Sheet 17 Filed Nov. 21, 1956 mw OHP H. M. SIERRA June 5, 1962 32 Sheets-Sheet 18 Filed Nov. 21, 1956 DRUM TIMING D/l/IS/ONS HOME POSITION DIGITS 12 PER WORD PULSES 4 PER DIGIT [Lu f SECTOR 0 seen? I W7 10 WORDS PER SECTOR TEI ECTOR 2 5 SECTORS f PER DRUM REVOLUTION PIECE; 4

FIG--3 cL- June 5, 1962 H. M. SIERRA 3,037,701

FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 32 Sheets-SheeclQ ACCUMULATOR g 43 4 UPPE sEcTIoN /L OWER SECTION DIGIT ODD WORD F *j EvEN WORD POSITIONS 1ol91sl7|e|5l4l3|2|Wcnixi ho|9|al7le|5|4l3|2|1 'olq QUOTIENT 9 ASSUMED FMANTISSAW SHIFT COUNT DECIMAL POINT CHARACTERISTIC 7 (EXPONENT+50) ADD'SUB COUNT DISTRlBUTOR- DIGIT POSITIONS h I I- V I I IZII lolg im ASSUMED DEcIMAL/v' POINT IvIANTIss/\ I I& SIGN. 8=MINUS=B5, Q3

IG 8 CHARACTERISTIC PLUS =B5'Q4 (EXPONENT +50) I WORD LEFT SHIFT pUPPER ,sEcTIoN j LOWER SECTION A RIGHT. SHIFT pUPPER SECTION I owER SECTIONA DIGIT INSERT FIG; 1 O

June 5, 1962 H. M. SIERRA 3,037,701

FLOATING DECIMAL POINT ARITHMETIC CONTROL MEANS FOR CALCULATOR Filed Nov. 21, 1956 s2 Sheets-Sheet 2o 1 13 14 Y; KI -O/I4 FIG; 1 3b 26 DATA INSTRUCTION 27 OP ADDRESS ADDRESS ,-A .4 A k i INSTRUCTION WORD 

